72925222897 has 2 divisors, whose sum is σ = 72925222898. Its totient is φ = 72925222896.

The previous prime is 72925222871. The next prime is 72925222939. The reversal of 72925222897 is 79822252927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71930703601 + 994519296 = 268199^2 + 31536^2 .

It is an emirp because it is prime and its reverse (79822252927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72925222897 is a prime.

It is not a weakly prime, because it can be changed into another prime (72925222807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36462611448 + 36462611449.

It is an arithmetic number, because the mean of its divisors is an integer number (36462611449).

Almost surely, 2^72925222897 is an apocalyptic number.

It is an amenable number.

72925222897 is a deficient number, since it is larger than the sum of its proper divisors (1).

72925222897 is an equidigital number, since it uses as much as digits as its factorization.

72925222897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 55.

The spelling of 72925222897 in words is "seventy-two billion, nine hundred twenty-five million, two hundred twenty-two thousand, eight hundred ninety-seven".